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[背景与导读]“面积和面积单位”是在学生初步认识周长的基础上进行的,从学习长度到学习面积,是空间形式认识发展上的一次飞跃。《数学课程标准》指出:“无论是从数学的产生还是从数学的发展来看,数学与现实生活都有着密不可分的联系。学生只有将数学和生活联系起来,才能够切实体会到数学的应用价值,学生学习数学的积极性才能真正地被激发,如此获得的数学知识、数学思想方法才有可能真正被用于解决现实生活中的问题。”基于此理念,笔者把“学生活中的数学”作为贯穿教学始终的主线,让学生感受概念课也能充满生活情趣,从而全身心地投入到学习中。
[Background and Introduction] The “Area and Area Unit” is based on the students’ initial knowledge of the circumference. From learning length to learning area, it is a leap forward in the development of understanding of space forms. “Mathematics Curriculum Standard” points out: “Both mathematics and real life are inextricably linked both in mathematics development and in mathematics development.Mathematics can be realized only when students associate them with life Value, the enthusiasm of students to learn mathematics can really be stimulated, the mathematical knowledge so obtained, mathematical thinking methods may be really be used to solve real-life problems. ”Based on this concept, the author of“ life in mathematics ” As the main thread that runs through teaching, students can feel immersed in the concept lesson and devote themselves fully to learning.